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SM8303-ADJ 数据表(PDF) 3 Page - SamHop Microelectronics Corp.

部件名 SM8303-ADJ
功能描述  150KHz, 3A PWM Buck Switching Regulator
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制造商  SAMHOP [SamHop Microelectronics Corp.]
网页  http://www.samhop.com.tw
标志 SAMHOP - SamHop Microelectronics Corp.

SM8303-ADJ 数据表(HTML) 3 Page - SamHop Microelectronics Corp.

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SAMHOP Microelectronics Corp.
SM8303
150KHz, 3A PWM Buck Switching Regulator
3
V1.0 May 17 ,2007
Absolute Maximum Ratings
Symbol
Parameter
Rating
Unit
VCC
Supply Voltage
+35
V
VSD
ON/OFF Pin input voltage
-0.3 to +25
V
VFB
Feedback Pin voltage
-0.3 to +25
V
VOUT
Output voltage to Ground
-1
V
PD
Power dissipation
Internally limited
W
TST
Storage temperature
-65 to +150
oC
TOP
Operating temperature
-40 to +125
oC
VOP
Operating voltage
+4.5 to +25
V
Electrical Characteristics (All Output Voltage Versions)
Unless otherwise specified, VIN=12V for 3.3V, 5V, adjustable version and VIN=24V for the 12V version. ILOAD = 0.3A
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
60
IB
Feedback bias current
VFB=1.3V
(Adjustable version only)
40
100
nA
127
150
173
FOSC
oscillator frequency
110
173
Khz
1.4
VSAT
saturation voltage
IOUT=3A
no outside circuit
VFB=0V force driver on
1.3
1.5
V
Max. Duty Cycle(ON)
VFB=0V force driver on
100
DC
Min. Duty cycle(OFF)
VFB=12V force driver off
0
%
5.5
ICL
current limit
peak current
no outside circuit
VFB=0 force driver on
3.6
4.5
6.5
A
Output = 0V
no outside circuit
VFB=12 force driver off
200
uA
IL
Output= -1V
Output
leakage
current
VIN=32V
2
60
mA
IQ
Quiescent Current
VFB=12 force driver off
5
10
mA
250
ISTBY
Standby Quiescent
Current
ON/OFF pin=5V
VIN=24V
150
300
uA
VIL
Low (regulator ON)
-
0.6
VIH
ON/OFF pin logic input
threshold voltage
High (regulator OFF)
2.0
1.3
-
V
IH
ON/OFF pin logic
input current
VLOGIC=2.5V (OFF)
15
25
IL
ON/OFF pin input current VLOGIC=0.5V (ON)
0.02
5
uA
TO220-5L
2.5
ΘJC
Thermal Resistance
TO263-5L
Junction to
case
3.5
oC/W
TO220-5L
28
ΘJA
Thermal Resistance
With copper area of
approximately 3 in
2
TO263-5L
Junction to
ambient
23
oC/W


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